The domain “Lk21.DE” does appear in any official registry for legitimate distributors. It is almost certainly an illegal streaming portal impersonating the older Lk21 (which used .com or .cc). In Germany, such domains are quickly reported to CUII (Clearingstelle Urheberrecht im Internet) and blocked by major ISPs (Deutsche Telekom, Vodafone, etc.). Even if you can access it today, tomorrow it may redirect to a seizure notice or malware.
The story follows the Justice League as they face the Anti-Monitor, a malevolent entity seeking to destroy the multiverse. Part One (January 9, 2024) Lk21.DE-Justice-League-Crisis-On-Infinite-Earth...
: A major plot feature is the introduction of the Bleed, an unstable dimension that exists outside the multiverse, which heroes use as a sanctuary hidden from the Anti-Monitor. The domain “Lk21
Even if the keyword suggests you already know about Lk21, here is why using such sites is a bad idea: Even if you can access it today, tomorrow